syslog.java

为了下东西 随便发了个 datamining 的源代码

/*
/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * Created on 2006/8/25
 *
 * @Author: Xiaojun Chen
 * $Revision$ 1.0
 *
 */

package eti.bi.common.System;

import java.io.File;
import java.io.FileInputStream;
import java.util.Properties;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import eti.bi.exception.SysException;

public class SysLog {
	static Logger logger = Logger.getLogger(SysLog.class.getName());
	
	//path relative to root
	private static String logHOME;
	
	private static String logfile = "Log.properties";
	
	private static boolean init = false;
	
	/**
	 * initial
	 * @throws SysException
	 * @throws Exception 
	 * */
	public static void initialize() throws SysException, Exception{
		if(!init){
			//initial
			logHOME = SysConfig.getSystemHome()+File.separator+"log";
			loadConfig(logHOME+File.separator+logfile);
			setLevel(Level.INFO);
		}
	}
	
	/**
	 * return the configuration of log
	 * */
	public static String getConfigurate(){
		return "";
	}
	
	/**
	 * default configuration and level
	 * */
	public static void log(String inform) {
		logger.info(inform);
	}
	
	/**
	 * @throws Exception 
	 * 
	 * */
	public static void log(String config, Level level,String inform) throws Exception{
		if(config!=null){
			loadConfig(config);
		}
		if(level!=null){
			setLevel(level);
		}
		
		log(inform);
	}
	
	private static void loadConfig(String logproperty) throws Exception{

		if(logproperty==null){
			throw new Exception("no such log file:"+logproperty,null);
		}
		Properties props = new Properties();
		        
		FileInputStream istream = new FileInputStream(logproperty);
		props.load(istream);
		
		if(props.getProperty("log4j.appender.ICE")==null){
			throw new Exception("No ICE appender",null);
		}
		String logFile = logHOME + File.separator+props.getProperty("log4j.appender.ICE.File");
		File file = new File(logFile);
		if(!file.exists()) {
			if(!file.createNewFile()) {
				throw new Exception("Can't create log file "+logFile,null);
			}
		}
		props.setProperty("log4j.appender.ICE.File", logFile);
		PropertyConfigurator.configure(props);
	}
	
	private static void setLevel(Level level) throws Exception{
		try{
			logger.setLevel(level);
		}
		catch(Exception e){
			throw new Exception(e);
		}
		
	}

	public static void debug(Object arg0) {
		logger.debug(arg0);
	}

	public static void debug(Object arg0, Throwable arg1) {
		logger.debug(arg0, arg1);
	}

	public static void info(Object arg0) {
		logger.info(arg0);
	}

	public static void info(Object arg0, Throwable arg1) {
		logger.info(arg0, arg1);
	}

	public static void warn(Object arg0) {
		logger.warn(arg0);
	}

	public static void warn(Object arg0, Throwable arg1) {
		logger.warn(arg0, arg1);
	}

	public static void error(Object arg0) {
		logger.error(arg0);
	}

	public static void error(Object arg0, Throwable arg1) {
		logger.error(arg0, arg1);
	}

	public static void fatal(Object arg0) {
		logger.fatal(arg0);
	}

	public static void fatal(Object arg0, Throwable arg1) {
		logger.fatal(arg0, arg1);
	}
}